1. Slide # 1 Date & Time: Wednesday, 4.00 – 5.15 pm One page double sided formula sheet allowed 4-5 problems; 10 T/F, Fill the gaps; 3-5 short questions Presentation from next Monday: Mohammad, Fatima, Kevin

2. Slide # 2 1.The higher the bandwidth the lower is the ….. 2.The higher the noise the lower is the …….. 3.Most sensors are linear 4.A capacitive sensor work well in smoky environment. 5.An LVDT sensor works better than a capacitive sensor in a humid environment 6.Hall effect sensor works better than capacitive sensor when the temperature is not constant 7.A capacitive displacement sensor is very linear 8.Linear optical sensors can only be one directional 9.A free standing AlGaN crystal will have both spontaneous and piezoelectric polarization 10.A piezoelectric device can be used for steady state pressure sensing 11.A piezoresistive device can be used to measure a sinusoidal pressure variation 12.A white noise has a spectral density that deceases monotonically with frequency

3. Slide # 3 1.Give 3 examples for displacement sensing based on different principles 2.Which displacement sensor type would you use to detect small displacement of (i) an iron rod (ii) oxide thickness on a semiconductor wafer ? 3.Mention one advantage and one disadvantage of a capacitive sensor. 4.Mention a very widely used displacement and rotational speed sensor. Draw the configuration of this sensor for sensing rotational speed. 5.Describe briefly the operation of linear optical sensor 6.Mention one advantage and one disadvantage of an ultrasonic sensor 7.All accelerometers use an inertial mass for detection 8.Accelerometers based on inertial mass measure the acceleration of the inertial mass to give out the signal